Pith Number

pith:SFGFIPZT

pith:2015:SFGFIPZTBKWC242CQ3Q5E7IW6M

not attested not anchored not stored refs pending

Eigenlogic in the spirit of George Boole

Zeno Toffano

arxiv:1512.06632 v12 · 2015-12-21 · cs.LO · math.LO

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{SFGFIPZTBKWC242CQ3Q5E7IW6M}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-05-18T00:24:22.899422Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

914c543f330aac2d734286e1d27d16f3396c7c41caf24a318aa323ae46e6e6ff

Aliases

arxiv: 1512.06632 · arxiv_version: 1512.06632v12 · doi: 10.48550/arxiv.1512.06632 · pith_short_12: SFGFIPZTBKWC · pith_short_16: SFGFIPZTBKWC242C · pith_short_8: SFGFIPZT

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/SFGFIPZTBKWC242CQ3Q5E7IW6M \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 914c543f330aac2d734286e1d27d16f3396c7c41caf24a318aa323ae46e6e6ff

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9a3fefa6becc1160f6ff282ed06a5d380bafbb283fa8ee649a743a6e61b2fdd1",
    "cross_cats_sorted": [
      "math.LO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LO",
    "submitted_at": "2015-12-21T14:09:27Z",
    "title_canon_sha256": "f86b0bfd4724ab7322a60b92e650568d78eea26ab78207d28f7c29308cb684d4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1512.06632",
    "kind": "arxiv",
    "version": 12
  }
}